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02 / 06 · Refill

Cleanse

Scalp exfoliation
30 ML · makes 200 ML

Salicylic acid 4.0%

Visibly less flaking after 28 days of use.

Evidence: n=62, 28 days ↓
Cleanse refill: a slim brushed-aluminium vial printed in black, with the active percentage in green.

$38Per refill · lasts about two months

Refills pour into Vessel 01. A first order has to include one: $65, bought once.

Specification

Salicylic acid
4.0%
pH
4.2
Concentrate
30 ML
Makes
200 ML
Lasts
About two months
Vial
Aluminium · 95 × 26 MM
Batch
C4-2026-0417

What it will not do

Cleanse contains 4% salicylic acid. That's a clinical concentration. If your scalp is already irritated, start with Cleanse Mild or you will make it worse.

Contraindications

  • If your scalp is already irritated, start with Cleanse Mild or you will make it worse.
  • Do not use on broken skin, open lesions or a scalp that is actively bleeding.
  • Not for children under 12. Avoid if you are allergic to salicylates, including aspirin.

Directions

Pour to collar. Fill to line. Shake once.

Pour one 30 ml refill into Vessel 01. Top up with water to the 200 ml line. The vial goes in the recycling.

Technical drawing of Vessel 01: 180 mm tall, 62 mm across, with graduation marks every 25 ml and a dose line at 200 ml. Pour the concentrate to the collar, fill with water to the line, shake once.200 ML180 MMØ 62 MM90° TURN
Concentrate
30 ML
Water
170 ML
Makes
200 ML

Evidence

n=62Participants
28 daysDuration
4.2pH

Open-label use study, adults with visible scalp flaking, three washes a week.

Clinician-graded flaking fell on 49 of 62 scalps. Seven participants stopped early because of irritation.

Use with, at most

Two products at once, no more. More actives means more irritation, not more result.

Cleanse$38 · Per refill